Last Saturday we fished the Cowlitz with a guide. We fished w/ 5' leaders while Boondoggin', and were told that is the standard length. Later after dark we did some Glow Balling. We anchored up and Drift Fished. We used the same exact set-up, except w/ Glow Corkies, same 5' leader length. We did pretty well, hooked 8 and got 4 in the box. I felt we could have used shorter leaders for the after dark fishing, but it seemed to work OK!!